We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-02 · 7 min read · Independent comparison
If you want the deepest noise cancellation and the longest single-charge playtime in this pair, choose TOZO NC9; if you need Hi-Res LDAC audio with the newest Bluetooth and a two-earbud bundle that covers both commuting and critical listening, choose SoundPEATS Air6.
• TOZO NC9 — biggest strength: Hybrid ANC rated to a 45dB reduction depth, plus a huge 60-hour total playtime (ANC off) and IPX8 water resistance.
• TOZO NC9 — biggest trade-off: No Hi-Res/LDAC codec listed, and it relies on Bluetooth 5.3 rather than the newer 6.0 protocol.
• SoundPEATS Air6 — biggest strength: The bundle pairs the LDAC/Hi-Res Air6 HS with the C30, whose adaptive hybrid ANC is rated up to 52dB and blocks roughly 92% of low-frequency noise.
• SoundPEATS Air6 — biggest trade-off: The Air6 HS itself is only IPX5 and its own noise cancelling is ENC-based, so the serious ANC lives in the C30 half of the bundle.
• Who each pick is for: Pick the NC9 if one pair of tough, long-lasting ANC buds is all you want. Pick the Air6 bundle if you want a hi-fi listening pair and a dedicated noise-cancelling pair in one purchase.
The NC9 is built around one idea: shut the world out and stay out for a long time. Its hybrid active noise cancelling is rated to a maximum reduction depth of 45dB, which is the kind of figure you want on a plane, a train, or a noisy open-plan office. Because it's hybrid rather than feed-forward-only, it's designed to catch noise from more than one direction — that's the practical difference you feel when low-frequency drone actually drops away instead of just getting muffled.
Battery is the other headline. TOZO lists 60 hours total with ANC off and 40 hours with ANC on, with a single-use figure of 14 hours (ANC off) and 10 hours (ANC on) after a full charge. A charging case with an LED battery display means you can see what's left instead of guessing. For anyone who hates charging rituals, that combination is genuinely useful.
There's more here than ANC. Six microphones with ENC handle calls, a Transparent Mode lets outside sound back in when you're crossing a street or waiting for an announcement, and the 10mm dynamic drivers with TOZO's OrigX Acoustic 2.0 tuning are aimed at deep bass. The app opens up 32 EQ options and noise-control modes, and there's an EQ-sharing zone if you like trading presets. IPX8 is a serious water-resistance rating — rain and sweat are not a concern. Fit is handled with six sizes of replaceable ear tips, and the 60ms latency figure is low enough for casual gaming and video.
Who should buy it: commuters, travelers, gym-goers and office workers who want one rugged pair with strong ANC and multi-day battery. Who should skip it: listeners who specifically want LDAC or a Hi-Res certified codec, and anyone who wants the newest Bluetooth generation — the NC9 is Bluetooth 5.3 with a 20-meter range.
This listing is actually a two-pack, and that changes the calculus completely. You get the Air6 HS, which is the audio-quality half, and the C30, which is the noise-cancelling half. Buying them together means you're covering two different jobs rather than compromising on one pair.
The Air6 HS is the enthusiast pick. It carries Hi-Res certification from the Japan Audio Society and supports the LDAC codec at 24bit/96kHz, which transmits roughly three times more data than standard Bluetooth — the reason LDAC fans describe it as near-lossless. The 13mm triple-magnet driver (one main magnet plus two auxiliary) is designed to raise magnetic flux for stronger drive, lower distortion and faster transient response. It runs Bluetooth 6.0 on a 22nm chipset for better power efficiency, stronger anti-interference and multi-device switching. Total playtime is listed at 45 hours with quick charging, IPX5 resistance and an ENC noise-cancelling mic setup for calls.
The C30 is the one for noisy rooms. Its adaptive hybrid ANC is rated up to 52dB and is quoted as blocking around 92% of low-frequency noise like aircraft cabin hum and traffic — that's the deepest figure across both products here. It also runs Bluetooth 6.0 with a low-latency mode, multi-point connectivity for hopping between phone and laptop, LDAC Hi-Res support, 52 hours of playtime, a 12mm driver, 6-mic call handling and IP54 protection. For work and travel, that's a very complete spec sheet.
Who should buy it: people who want genuine hi-fi listening and top-tier ANC without picking one, plus anyone who wants the latest Bluetooth 6.0 and multi-point switching. Who should skip it: minimalists who want a single pair to do everything — the bundle means two cases, two charging routines, and more to keep track of.
• Best for maximum noise reduction → SoundPEATS Air6 (C30). Its adaptive hybrid ANC is rated up to 52dB versus the NC9's 45dB.
• Best for a single pair with long battery → TOZO NC9. 60 hours total with ANC off, and an LED display so you always know the charge level.
• Best for audio purists → SoundPEATS Air6. LDAC at 24bit/96kHz, Hi-Res certification and a 13mm triple-magnet driver.
• Best for swimming-level water resistance → TOZO NC9. IPX8 versus IPX5 on the Air6 HS and IP54 on the C30.
• Best for staying aware outdoors → TOZO NC9. Dedicated Transparent Mode plus IPX8 makes it the safer pick for running and cycling.
• Best for gaming and video sync → SoundPEATS Air6. Bluetooth 6.0 with a dedicated ultra-low latency mode on the C30; the NC9 lists 60ms latency, which is fine but not the focus.
• Best for switching between laptop and phone → SoundPEATS Air6. Multi-point connectivity is listed for the C30.
• Best for tweaking your own sound → TOZO NC9. 32 EQ presets in the app plus a community EQ-sharing zone.
• Best for one-purchase coverage of two use cases → SoundPEATS Air6. One hi-fi pair, one ANC pair, no compromise.
In my opinion, the TOZO NC9 is the better buy if you want one pair of earbuds to do everything, every day. The 45dB hybrid ANC, 60-hour total battery, IPX8 rating and six tip sizes add up to a pair you can throw in a bag and forget about for days. The SoundPEATS Air6 bundle wins on sheer capability — LDAC Hi-Res audio, a 52dB adaptive ANC set, and Bluetooth 6.0 with multi-point — but you're managing two pairs to get it. If deep noise cancelling and battery life are your two priorities, I'd take the NC9. If pristine audio quality matters more than convenience, the Air6 bundle earns its place.
FAQ
what is hybrid anc earbuds
Hybrid ANC means the earbuds use microphones on both the outside and the inside of the ear to sample noise, then cancel it. The outside mics catch ambient sound before it reaches you, and the inner mics check what's left. Both the TOZO NC9 and the SoundPEATS C30 use this approach.
what is anc earbuds
ANC stands for Active Noise Cancelling — the earbuds generate sound waves that cancel out incoming noise, which works best on steady low-frequency sounds like engine drone or air conditioning. The NC9 is rated to a 45dB reduction depth; the C30 is rated up to 52dB.
what are hybrid anc earbuds
The SoundPEATS Air6 HS and C30 both list LDAC Hi-Res support, with the Air6 HS certified by the Japan Audio Society. The TOZO NC9 does not list LDAC or Hi-Res certification — it focuses on 32 EQ options and OrigX Acoustic 2.0 tuning instead.
If you're weighing cost, check the current price on Amazon before deciding — the numbers move, and the spec differences above are what actually stay constant.
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